Hydraulic pipe



(No Model.)

L. B. BATTIN.

HYTDRAULIO PIPE.

No. 367,262. Patented July 26, 1887.

5 W/TNESSES I I Mam-40am A 7'7'0H/VE Y3 N. PETERS. Photo-Ulhflgrapher.Wilmington. D C.

UNITED STATES PATENT OFFICE.

LAMBERT B. BATTIN, OF ELIZABETH, NEW JERSEY;

HYDRAULIC PIPE.

SPECIFICATION forming part of Letters Patent No. 367.262, dated .Tuly26, 1887. Application filed March 25, 1887. Serial No. 232,420. (Nomodel.)

To aZZ whom it may concern.-

Be it known that I, LAMBERT BERGMAN BATTIN, a citizen of the UnitedStates, residing at Elizabeth, in the county of Union and State of NewJersey, have invented certain new and useful Improvements in HydraulicPipes, of which the following is a specification.

Myinvention relates to animproved pipe for underground use, and isespecially adapted to be employed for conveying waterf My invention inthe present instance relates to the manner of constructing andassembling the parts thereof, whereby a better pipe is produced than.any now employed for I the purpose above described.

- purpose of giving shape to the intermediate Hcretofore the greatdifficultiesencountered by engineers have been the rotting away andbreaking, by'disintegration or otherwise, of

the component parts of the pipe, thus causing agreat expense in therelaying and .repairing of the same from year to year. To obviate thesedrawbacks is the object of my invention *which I will now proceed todescribe.

It consists in forming an iron tube with aninterior lining of cement,and of surrounding the pipe with the same material, and incas ing thelatter with a second iron pipe for the cement, and also forstrengthening and protecting the wholestructure. This outer shell orcasing of metal I form with a number of perforations or openings, toprovide for the escape of the air, which would otherwise be confinedwhen filling in the space between the inner and outer metallic shells.By my process, therefore, of making these pipes, I ma pense with thisdangerous and inevitable drawback in all pipes of this class nowmanufactured. These air-spaces that are formed in the style of pipe nowin nseform weak places, and the pipe at these points very soon rusts andgives way, thus causing leakage and damage.

Referring to the accompanying drawings, which form a part of thisspecification, Figure 1 is an end elevation. Fig. 2 is acrosssecti0n,and Fig. 3 is a plan view showing the perforations abovereferred to.

In the drawings, (t represents an inner metallic shell, and B an outer,and between the two is placed the cement or other filling, O.

Theinner pipe, at, is also lined with cement, D. The outer pipe, B, isprovided with perforations P, of any suitable size and arranged in anysuitable manner.- These perforations may be small, as they will answerthe purpose just as well and better than larger perforations oropenings. After the inner pipe has been lined the outer pipeis set overit in the proper position relative to it, so as to center the innerpipe, and then the annular opening formed between the two pipes. ischarged with the cement or other material. up and the cement is forcedin, it can readily be seen that quantities of air would be confined andentrapped by the cement unless some provision was made for its escape.is the object of the perforations P, for as the cement is forced down,the air, which would out at the openings or perforations. By this meansa perfectly solid structure is formed between the two pipes-'-a resultwhich has not hitherto been accomplished in devices of this kind.

In lieu of perforating the outer pipe, as I have described, I mayperforate the inner pipe, and by this means form vents for the escape ofthe air. This, however, is not an available means or process, andI'prefer the method I have shown and described.

Having thus described my invention, what I claim as new therein, anddesire to secnre'by Letters Patent, is-

1. A pipe consisting of two concentricshells and cement or otherlinings, as herein shown, one of said shells being perforated, as andfor the purpose set forth.

2. The herein-described hydraulic pi pe,consisting of two concentricshells with the linings O and D, and the outer shell provided with anumber of perforations, substantially as and for the purpose set forth.

3. The herein-described hydraulic pi pe,consisting of two concentricmetallic shells with the cement linings G and D, and the outer shellprovided with a number of perforations for the escape of air, asdescribed.

As the cavity fills This 7o otherwise be confined and entrapped, isforced

